Combination clamp and lifting-jack.



m. MIA-88. Patented Nov. l3, I900.

P. BBUADBOOKS.

COMBINATION CLAMP AND LIFTINIG JACK.

(Application filed Jan. 11. 1900.)

(Pin Model.)

lUNliFFlD drains atnr ri icni PETER BROADBOOKS, OF BATAVIA, NEW YORK.

GUWlBlNATlON CLAW! P AND LIFTING JACK.

SPECIFICATION forming part of Letters Patent No. 661,488, dated.November 13, 1900.

Application filed January 11, 1900. Serial No. 1,044. (No model.)

' To all whom it may concern:

Be it known that 1, PETER BROADBOOKS, a citizen of the United States,residing at Bat-avia, county of Genesee, and State of New York, haveinvented a certain new and useful Improvement in a Combination Clamp andLifting-Jack, of which the following is a specification.

My invention relates to a new and useful improvement in a combinationclamp and lifting-jack, and has for its object to so construct acon1bination-tool of this description as to render it as efficient foreither purpose as though it embodied but a single element.

With this end in view this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claim.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will now be described in detail, referring to theaccompanying drawings, forming a part of this specification, in which-Figure l is a side elevation of my improved combination-tool whenadjusted for use as a double-head clamp; Fig. 2, a similar view showingit used as a single-head clamp; and Fig. 3 a similar view showing thetool adjusted for use as a lifting-jack.

In carrying out my invention as here embodied, A represents the beam,having jaw B adjustably secured thereon by the set-screw O and thescrew-block D adjustably secured upon the beam by the set-screw E. Ahollow operating-screw F is threaded through the screw-block and hassecured thereon the handwheel G for its manipulation. A spindle H isjournaied in the hollow screw and carries a socket or chuck I upon itsinner end, while its outer end is provided with the collar J to hold thespindle in place. A jaw K is fitted to slide upon the beam, and thechuck I is attached thereto by a pin L (shown in dotted lines in Fig. 1)being passed through the jaw and secured in the chuck by the set-screwM.

From this description it will be seen that when the tool is thusadjusted the work (represented at N) may be firmly clamped between thejaws by the proper manipulation of the hand-wheel, the screw revolvingupon the spindle without revolving the latter, and when the work isclamped it may be thereafter held by binding the set-screw 0 upon thebeam. When desired, the tool may be adjusted to be used as a single-headclamp, as shown in Fig. 2, by omitting the jaw K, in which case thechuck L will bear directly against the work and serve in the place ofthis omitted jaw. In adjusting this improved tool for use as alifting-jack the jaw Bis utilized as a foot by being reversed upon thebeam and secured at the lower end thereof, and the reversal of thescrewblock D will give the operating-screw the action of alifting-screw, the chuck serving as the support.

Having thus fully described my invention, what I claim as new and usefulis- In a device of the character described, a beam, a jaw adj ustablysecured on the beam, a screwblock adj ustably secured on the beam, ahollow operating-screw threaded through the screw-block, a hand-wheelsecured to the screw, a spindle journaled in the hollow screw andterminating in a socket, a jaw slidable on the beam, a rod swiveled inthe slidable jaw and removably connected to the socket of the spindle,as and for the purpose set forth.

In testimony whereof I have hereunto affiXed my signature in thepresence of two subscribing witnesses.

PETER BROADBOOKS.

WVitnesses:

G. H. HOLDEN,

FRANCIS L. HAWES.

